.imgStyle{
    width:400px;
    height:500px;
}

.col-xs-6, .col-md-3{
    position: inherit!important;
  }
  .thumbnail img {
    /*transition: all 1s linear;*/
    /*-webkit-transition: all 1s linear;*/
  }
  a.thumbnail.added:before{
    content: "已添加";
    background-color:rgba(0,0,0,0.3);
    color: #fff;
    position: absolute;
  }
  